another blown HG - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sliEighty · 03-05-2007, 05:34 PM

ok i will prolly get bashed for this but i searched and couldnt find my situation... ive noticed a lack of power in my sr swapped 240sx however i see no smoke coming from the exhaust but with weak power and poor idle it leads me to believe a headgasket problem... could it be due to a bad o2 sensor... i have no had time to compression test it which i will do tomorrow but i wanted to get another opinion

**Phlip** · 03-05-2007, 05:39 PM

Compression/leakdown are good ideas, as would be pressure testing the rest of the cooling and all that goodness too. Odd losses of power, leaking coolant and an erratic idle were my signs. Mine never "blew" per se, there was never any mixing of oil and coolant, but it has been replaced nonetheless.

sliEighty · 03-05-2007, 05:42 PM

so no chance that its the o2 sensor i just checked it and there seems to be a wire that is cut loose... and when you replaced it was there a noticed difference

03-05-2007, 05:34 PM	#1
sliEighty Zilvia Junkie Join Date: Jan 2006 Location: Central pensyltucky Posts: 471 Trader Rating: (3) Feedback Score: 3 reviews	another blown HG ok i will prolly get bashed for this but i searched and couldnt find my situation... ive noticed a lack of power in my sr swapped 240sx however i see no smoke coming from the exhaust but with weak power and poor idle it leads me to believe a headgasket problem... could it be due to a bad o2 sensor... i have no had time to compression test it which i will do tomorrow but i wanted to get another opinion __________________ livin on the east cost is harder then you think... ECM for life lll

03-05-2007, 05:39 PM	#2
Phlip Yes, I look like that Join Date: Mar 2002 Location: In my supervillain's lair Posts: 27,980 Trader Rating: (19) Rides Gallery: Phlip Feedback Score: 19 reviews	Compression/leakdown are good ideas, as would be pressure testing the rest of the cooling and all that goodness too. Odd losses of power, leaking coolant and an erratic idle were my signs. Mine never "blew" per se, there was never any mixing of oil and coolant, but it has been replaced nonetheless. __________________ Weirdo And I write too!

03-05-2007, 05:42 PM	#3
sliEighty Zilvia Junkie Join Date: Jan 2006 Location: Central pensyltucky Posts: 471 Trader Rating: (3) Feedback Score: 3 reviews	so no chance that its the o2 sensor i just checked it and there seems to be a wire that is cut loose... and when you replaced it was there a noticed difference __________________ livin on the east cost is harder then you think... ECM for life lll